SKF
Sealing and Spacing Washers
SKF sealing and spacing washers are thin, precision-stamped components that serve both as static seals and as accurate spacers in bearing arrangements. A sealing washer typically has a bonded elastomer face or an interlocking labyrinth profile to prevent lubricant migration along a shaft. Spacing washers establish precise clearance between bearing inner and outer rings or secure adjacent components. While small, these components are critical in ensuring the correct axial position and sealing of tapered roller bearing sets and wheel hub units. SKF produces them in a range of standard sizes and can manufacture custom dimensions. Using the correct sealing and spacing washer simplifies mounting and ensures that the bearing preload or clearance is maintained precisely as designed.
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Dual Function
Acts as a seal and precision spacer, reducing part count.
Ensures Correct Bearing Setting
Maintains designed clearance or preload.
Labyrinth Profile Available
Non-contact sealing without friction.
Custom Dimensions
SKF manufactures washers to exact thickness and OD requirements.
Robust Stamped Material
Spring steel or stainless for consistent tension.
Lubricant Retention
Prevents grease migration and adjoining component interference.
Spacing Washers for Tapered Roller Bearing Preload Settings
In automotive differentials, the exact thickness of the spacer between tapered roller bearing cones sets the differential preload. SKF supplies precision ground spacing washers in stepped thicknesses to allow mechanics to achieve the manufacturer-specified rolling torque.
Sealing Washers in Wheel Hub Assemblies
A sealing washer fitted between the outer bearing race and the hub face prevents grease from migrating out and water from entering. When combined with a radial shaft seal, this creates a reliable, long-life sealing system for truck and trailer wheel ends.